<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style>
        a{
            /*text-decoration: none;*/
            text-decoration: line-through;

        }

        p {
            color: red;
            text-align: center;
            /*text-decoration: overline;*/
            /*text-decoration: underline;*/
            text-decoration: line-through;
        }
    </style>
</head>
<body>
<p>文字</p>
<br>

<a href="http://www.baidu.com">百度</a>
</body>
</html>